A single-family home on a treed hillside street is near the end of the restoration queue.
Metro Vancouver has an unusual combination of conditions for an urban region: dense mature tree canopy, steep terrain on the North Shore and in the Tri-Cities, long overhead distribution spans, a very wet and windy autumn, and an increasingly electric housing stock. Individually none of those is unusual. Together they produce a region where multi-hour outages are routine and multi-day outages happen most winters somewhere in the Lower Mainland.
The pattern repeats every year. A Pacific frontal system arrives with gusts in the 70 to 100 km/h range. Saturated ground releases root systems, limbs break, and conifers contact primary lines. Crews are dispatched to hundreds of simultaneous faults, and priority goes to hospitals, major feeders and the largest customer counts first. A single-family home on a treed hillside street is, realistically, near the end of that queue. That is the gap a home standby generator closes.
What a standby generator is — and how it differs from a portable
A standby generator is a permanently installed appliance. It sits outside on a pad, much like an air conditioning condenser, and it is hard-wired to your electrical panel through an automatic transfer switch. That switch is the part most homeowners have never heard of and the part that matters most. It continuously monitors utility voltage. When the grid fails, it isolates your home from the utility, signals the generator to start, and connects your circuits to generator power — typically within 10 to 30 seconds. When utility power returns and stays stable, it transfers back and shuts the generator down after a cool-down cycle.
Because the unit is connected to a fixed fuel supply — usually natural gas — there is nothing to refuel, nothing to drag out of a shed in the rain, and no extension cords running through a door. That distinction is not just about convenience. It is also about safety: carbon monoxide poisoning from portable generators operated in garages, under decks or near windows is a documented cause of serious injury during storm events, and back-feeding a portable into a wall outlet endangers utility crews. A permanently installed system with a proper transfer switch removes both hazards by design.
Whole-home coverage versus essential circuits
There are two legitimate ways to design a residential system, and the right answer depends on your loads and budget.
- Whole-home coverage backs up the entire electrical panel. During an outage the house behaves normally — every light, appliance, outlet and system works. This is the most common request and the simplest to live with.
- Essential-circuits coverage backs up a selected subpanel: heating, refrigeration, sump or well pump, internet and networking, key lighting and a handful of outlets. It costs less, uses a smaller unit, and covers every safety-critical function.
- Load-managed whole-home is the middle path. Smart load-management modules temporarily shed high-draw items — EV charger, hot tub, air conditioning, electric range — so a smaller, less expensive generator can still cover the whole house without nuisance shutdowns.
Sizing: why the load calculation is the whole job
Generator sizing is where most bad installations are created. Square footage is a poor proxy for electrical demand. What matters is total running load plus the starting surge of the largest motors in the house. Heat pumps, air conditioners, well pumps and deep-well booster pumps can draw two to three times their running current for a fraction of a second at start-up, and a generator that cannot absorb that surge will stumble, trip or shut down under exactly the conditions you bought it for.
As a general frame of reference: a gas-heated home of roughly 2,000 square feet often lands in the 14 to 18 kW range for whole-home coverage. An all-electric home with a heat pump, electric hot water, induction cooking and an EV charger can require 22 to 26 kW, and large hillside homes with multiple zones, elevators and pumps frequently move into liquid-cooled units above 30 kW. Those figures are starting points for a conversation, not a quote. The number that belongs in your proposal comes from an actual calculation of your panel and your equipment.
Fuel: natural gas, propane, or diesel
Natural gas is the default recommendation almost everywhere in the region where service exists. Runtime is effectively unlimited, there is no tank to maintain, no fuel to stabilize, and nothing to manage during a storm. The gas line must be sized correctly from the meter to the unit, which is a design step, not an afterthought — an undersized line starves the engine under load.
Propane is the answer for acreages and upper-slope properties outside the gas network. It stores indefinitely and burns cleanly, but the tank has to be sized for the runtime you actually want. Planning for a two- or three-day outage rather than an eight-hour one is the difference between a system that helps and a system that runs dry at hour twenty.
Diesel is mostly a commercial and large-estate choice. It offers high power density but requires fuel storage, polishing and more involved maintenance, so it is rarely the right fit for a typical residential lot.
What installation involves, and why permits matter
A compliant residential generator installation is a multi-trade project: electrical work at the panel and transfer switch, gas fitting for the fuel connection, and site work for the pad and clearances. It requires permits — typically electrical and gas, and in many municipalities a mechanical or placement permit — and it is inspected against the Canadian Electrical Code and provincial gas regulations.
Permits are not bureaucracy for its own sake. Unpermitted generator work is a recurring problem at resale, it can compromise an insurance claim after a fire or flood, and an improperly installed transfer switch can energize a utility line that a crew believes is dead. Any quote you accept should include permit costs, inspection and a commissioning load test where the generator is proven under real household load — not just started and shut off.
Maintenance and long-term reliability
A standby generator is a small engine that spends almost all of its life waiting. That is a specific kind of mechanical challenge, and it is why maintenance is not optional. A weekly self-exercise cycle circulates oil and keeps components free. An annual service covers oil and filter, air filter, spark plugs on schedule, valve lash on schedule, coolant on liquid-cooled units, and a battery test.
Battery failure is by far the most common reason a generator fails to start when it is finally needed. A three- to five-year-old battery that reads fine at rest can still fail under cranking load in cold weather. Testing it annually, under load, is the single highest-value maintenance item on the list.
Is it worth it?
Framed as a comfort purchase, backup power is easy to postpone. Framed as risk management, the math looks different. A single extended outage can mean spoiled food, a flooded basement from a stopped sump pump, burst pipes from a cold snap, lost remote-work income, hotel nights, and — for households with medical equipment — a genuine safety event. Insurance deductibles and remediation costs from one water event routinely exceed the installed cost of a system.
There is also a resale consideration. In outage-prone neighbourhoods — the North Shore slopes, Burke Mountain, Silver Valley, rural Langley and Surrey — a permitted standby system is a recognised fixture that buyers specifically look for, in the same category as a newer roof or an upgraded electrical service.
If you are weighing options, the fastest way forward is a load calculation and a site review. That produces the three numbers that actually matter: the size you need, the fuel that fits your property, and the installed price. Start with a free assessment and see where your home lands.